Peter King started the ball rolling Monday at “Detroit is a perfect fit for free agent running back Reggie Bush.” And Kevin Seifert picked it up at, agreeing Bush could slip right into the Jahvid Best slot, a back who can run and catch. “Again, we’re just matching skills with scheme at this point,” Seifert admitted. “Interest from either side is unknown,” but “we should at least consider all possibilities.” Isn’t that what mock drafts do? So why can’t they do mock free agent signings?